Lslight Mini Probe Stick Flexible Clip On LED Hobby Table Desk Reading USB Light Lamp Touch Dimmable On-Off (Silver) Special touch switch design,touch to turn on/off,long touch to dim the lamp.Quality led light source,no radiation harm for eyes. 50000 houres long lifttime,10 led,energy saving but brightness.No batteries needed,no worried about the power running out of works with your laptop or power bank . With flexible/bendable body/mini size & lightweight,portable enough for you to use in different occasions such as reading,writing,working. 130CM/51IN length of the USB wire,this lamp could be using more occasions that you need.Two classic colors for your choice. We will do our best to solve your problem ASAP if there is any defective or dissatisfied product.Any questions about our lamps please feel free to ask us.